Snap fastener stud



May 18, 1937. F', Cox 2,080,979

' SNAP FASTENER s'run Filed June 13, 1933 Inventor: cfase vh I? 00.2 Imm Patented May 1e, 1937 PATENT OFFICE- 7 SNAP FASTENER- s'rUn Joseph F.Cox, Arlington, Masa, assignor to United-Carr Fastener Corporation,

Cam-

bridge, Mass., a corporation or Massachusetts Application June 13, 1933,Serial No. 675,585

3 Claims.

My invention aims to provide improvements in snap fastener studs, themethod of making the same and installations thereof.

In the drawing which illustrates preferred embodiments of myinvention:--

Figure 1 is a plan view of a strip of ribbonlike sheet metal stockshowing the first formation'step in the method of making my improvedsnap fastener stud;

Fig. 2 shows the blank bent in the middle and the ends of thesocket-engaging portion overlapped during the second step of the methodof making'my improved stud;

Fig. 3 is a plan view of the complete stud showing the first step ofbending the socket-engaging projections at a right angle to the base;

Fig. 4 is a side elevation of the complete stud member;

Fig.5 is a part section and part side elevation of an installation ofmy-improved stud member;

Fig. 6 is a front elevation of the installation shown in Fig. 5 plus thesupporting structure in cross-section;

Fig. 7 is a plan view of the installation shown in Fig. 5;

Fig. 8 is a plan view of a modified form of installation;

Fig. 9 is a plan view of another modified form of installation; and

Fig. 10 is a section taken on the line Ill-I0 of Fig. 9.

In the drawing which illustrates preferred embodiments of my invention,I have shown a snap fastener stud member which is particularly, thoughnot exclusively, adapted for use as an upholstery and like fastener. Thefastener per se is preferably L -shaped and has a loop-shaped base I andan upright socket-engaging portion comprising a pair of movableprojections 2'2, each projection being formed as an integral extensionat the open end of the loop-shaped base I. The socket engagingprojections are arranged so that they may overlap each other in ascissorslike action when moved toward each other edge- Wise,as clearlyshown in'Figs. 3 and 4. Each of the projections 2-2 has its outer edge 3shaped and arranged so that both edges cooperate to provide a divergingneck portion and a converging head portion, as best illustrated in Fig.6. The inside edges of the arms of the loop-shaped portion I- are raisedslightly at the point at which the integral projections 2'2 extend fromthe arm (Fig. 6) by twisting the arms slightly so that'- the insideedges will be higher in relation to the normal-plane of the arms thanthe outside edges at points toward the ends of the arms. This raisingof-the inside edges of the arms is provided so that when the projections2--2 are moved toward each other the arms of the loop-shaped base maymove back toward the normal plane of the base without interference fromthe part to which the base is to be attached.

My improved fastener is' preferably formed from a thin, ribbon-likesheet metal stock which is of substantially greater width than itsthickness. It is formed by an improved method as follows: First, thediverging and converging socket-engaging projections are formed at theends of the blank which is cut from the strip which is best illustratedin Fig. 1. Thereafter, the blank is bent at its mid portion into aloopso that the loop-shaped base I may be formed and the ends of thesocket-engaging projections 2-2 overlapped,'as best illustrated in Fig.2. Finally, the stud member is completed by bending the looped blankshown in Fig. 2 in such a manner that the socket-engagingprojections 2-2extend at right angles from the arms of the looped base, During thislast operation, or at any previoustime, the arms of the looped base I.may be twisted in the manner and for the purposes heretofore defined.

While I am aware that my improved fastener may be used with'varioustypes of installations, I have found that it is particularly usefulinconnection with simple upholstery installations,

as illustrated in Figs. 5 through 10. The installation illustrated'inFigs. 5, 6 and '7 includes -,a supporting structure of cardboard 4 orthe like to which is attached a metallic part or staple 5 by means ofattaching prongs 6 (Fig: 5) and so shaped that at least a portionthereof is spaced from the,face of the cardboard 4. v The part 5 is alsoprovided with a boss 1 (Figs. 5 and 7) extending toward the cardboard sothat when the loop-shaped base I is pushed into the space between thecardboard 4 and thepart 5the boss will enter into the space provided bythe loopshaped base. In this manner the stud is held in assembledrelation to the cardboard 4 and part 5 while being shiftable laterallyin anydirection withinthe limits of the space provided by the aperture 8of the loop-shaped base.

The installation illustrated by Fig. 8 includes the same number of partsoperating in the same suitable attaching elements. In the particularstructure of the strip I I have provided a cut-out recess H extendinginwardly from one edge to receive the socket-engaging projections 2-2.In this instance the cardboard is debossed at opposite sides of therecess I I to provide bosses |2l2 so that the base I may engage a bossregardless of the side of the recess II at which the base I is enteredbetween the supporting structure and the part ll.

The installation shown in Figs. 9 and 10 is very similar to thatillustrated and described in connection with Fig. 8. In this instance,however, only one boss I3 is provided and a Wider and somewhat shallowernotch I4 is formed in the edge of the part 9 so that the fastener may beattached by a straight movement of the loopshaped base I beneath thepart 9 and in alignment with the notch 14.

In each of the installations illustrated and described the parts whichare substantially alike have been given the same numerals and in Fig. 10there is shown the general construction of each of the bosses shown inFigs. 8 and 9.

While-I have illustrated and described preferred embodiments of myinvention, I do not wish to be limited thereby, because the scope of myinvention is best defined by the following claims.

I claim:

1. A snap fastener stud of the class described formed from a singlepiece of flat ribbon-like sheet metal bent edgewise upon itself, saidstud having a substantially U-shaped base comprising a pair of arms anda portion connecting said arms at one end, said arms converging towardtheir free ends, and a socket-engaging projection extending directlyfrom each of the free ends of said arms away from the plane of said baseat that edge of the base opposite the connecting portion.

2. A snap fastener stud of the class described formed from a singlepiece of fiat ribbon-like sheet metal bent edgewise upon itself, saidstud having a substantially U-shaped elongated base comprising a pair ofarms and a portion connecting said arms at one end, said arms convergingin straight lines from the connecting portion to at one end, said armsconverging toward their free ends, and a socket-engaging projectionextending directly from each of the free ends of said arms away from theplane of said base at that edge of the base opposite the connectingportion and raised portions of said arms at their inner edges at leastadjacent to where they join the socket-engaging projections for thepurposes described.

JOSEPH F. COX.

